Oh, and for the record, the crazy-ass geometric animations on the article are not that far off what I get when receiving IV ketamine and I close my eyes--although the real ones are far more complex and change constantly. However, the fear-and-loathing melty and color changing stuff is not something ketamine induces. What the page does not capture at all is horrible effects it has on sound. The visual stuff is pretty tolerable, but a simple fan ends up sounding like a helicopter, and most other sounds get very harsh. For me, having music is absolutely critical to getting through the whole process. I listen to a mix of various Bach performances, which gives the whole crazy trip some structure and narrative and keeps it familiar enough that I feel like I still have a handle on and am still grounded in reality, despite the strong dissociative side effects.